Liquid crystal display device, method for driving liquid crystal display device, and electronic apparatus

Abstract

A liquid crystal display device includes: a pixel array unit in which pixels including a liquid crystal cell are arranged in a matrix; scan lines; common wiring; and data lines, in which each of the pixels includes a pixel transistor connecting the data line and the pixel electrode, a conductive state/a non-conductive state of the pixel transistor is controlled by a scan signal voltage applied to the scan line, a signal voltage whose polarity is inverted in regular cycles is supplied to the common wiring, and at least one of a pre-charge voltage supplied to the data line prior to writing of a video signal voltage or a scan signal voltage supplied to the scan line when no pixel is selected is supplied so as to vary in accordance with the position at which the pixels are selected row by row in the pixel array unit.

What is claimed is: 
     
       1. A liquid crystal display device, comprising:
 a pixel array unit in which pixels including a liquid crystal cell are arranged in a matrix; 
 a plurality of scan lines that selects the pixels row by row, the plurality of scan lines extending along a row direction; 
 common wiring that supplies a voltage to a counter electrode in the liquid crystal cell; and 
 a plurality of data lines that supplies a voltage to a pixel electrode in the liquid crystal cell, the plurality of data lines extending along a column direction, 
 wherein each of the pixels includes a pixel transistor connecting a data line in the plurality of data lines and the pixel electrode, and a conductive state/a non-conductive state of the pixel transistor is controlled by a scan signal voltage applied to a scan line of the plurality of scan lines, 
 wherein a signal voltage whose polarity is inverted in regular cycles is supplied to the common wiring, and 
 wherein a scan signal voltage supplied to the scan line of the plurality of scan lines when no pixel is selected is supplied so as to vary between a positive voltage value and a negative voltage value, with the positive voltage value being at least twice that of the negative voltage value, in accordance with a position at which the pixels are selected row by row in the pixel array unit. 
 
     
     
       2. The liquid crystal display device according to  claim 1 , wherein
 the scan signal voltage supplied to the scan line of the plurality of scan lines when no pixel is selected is supplied so as to vary in accordance with the position at which the pixels are selected row by row. 
 
     
     
       3. The liquid crystal display device according to  claim 1 , wherein
 a plurality of groups including a plurality of adjacent pixel rows is formed in the pixel array unit, and 
 the scan signal voltage supplied to the scan line of the plurality of scan lines when no pixel is selected is supplied so as to vary in accordance with a group of the plurality of groups in which the pixels selected row by row are located. 
 
     
     
       4. A method for driving a liquid crystal display device comprising:
 a pixel array unit in which pixels including a liquid crystal cell are arranged in a matrix; 
 a plurality of scan lines that selects the pixels row by row, the plurality of scan lines extending along a row direction; 
 common wiring that supplies a voltage to a counter electrode in the liquid crystal cell; and 
 a plurality of data lines that supplies a voltage to a pixel electrode in the liquid crystal cell, the plurality of data lines extending along a column direction, 
 wherein each of the pixels includes a pixel transistor connecting a data line in the plurality of data lines and the pixel electrode, and 
 wherein a conductive state/a non-conductive state of the pixel transistor is controlled by a scan signal voltage applied to a scan line of the plurality of scan lines, 
 the method comprises:
 supplying a signal voltage whose polarity is inverted in regular cycles to the common wiring; and 
 supplying a scan signal voltage supplied to the scan line of the plurality of scan lines when no pixel is selected such that the scan signal voltage varies, between a positive voltage value and a negative voltage value, with the positive voltage value being at least twice that of the negative voltage value, in accordance with a position at which the pixels are selected row by row in the pixel array unit. 
 
 
     
     
       5. The method for driving a liquid crystal display device according to  claim 4 , further comprising supplying the scan signal voltage supplied to the scan line of the plurality of scan lines when no pixel is selected such that the scan signal voltage varies in accordance with a position at which the pixels are selected row by row. 
     
     
       6. The method for driving a liquid crystal display device according to  claim 4 , further comprising:
 forming a plurality of groups including a plurality of adjacent pixel rows in the pixel array unit, and 
 supplying the scan signal voltage supplied to the scan line of the plurality of scan lines when no pixel is selected so as to vary in accordance with a group of the plurality of groups in which the pixels selected row by row are located. 
 
     
     
       7. An electronic apparatus, comprising:
 a liquid crystal display device, 
 wherein the liquid crystal display device comprises:
 a pixel array unit in which pixels including a liquid crystal cell are arranged in a matrix; 
 a plurality of scan lines that selects the pixels row by row, the plurality of scan lines extending along a row direction; 
 common wiring that supplies a voltage to a counter electrode in the liquid crystal cell; and 
 a plurality of data lines that supplies a voltage to a pixel electrode in the liquid crystal cell, the plurality of data lines extending along a column direction, 
 wherein each of the pixels includes a pixel transistor connecting a data line in the plurality of data lines and the pixel electrode, and a conductive state/a non-conductive state of the pixel transistor is controlled by a scan signal voltage applied to a scan line of the plurality of scan lines, 
 wherein a signal voltage whose polarity is inverted in regular cycles is supplied to the common wiring, and 
 wherein a scan signal voltage supplied to the scan line of the plurality of scan lines when no pixel is selected is supplied so as to vary, between a positive voltage value and a negative voltage value, with the positive voltage value being at least twice that of the negative voltage value, in accordance with a position at which the pixels are selected row by row in the pixel array unit. 
 
 
     
     
       8. The electronic apparatus according to  claim 7 , wherein
 the scan signal voltage supplied to the scan line of the plurality of scan lines when no pixel is selected is supplied so as to vary in accordance with the position at which the pixels are selected row by row. 
 
     
     
       9. The electronic apparatus according to  claim 7 , wherein
 a plurality of groups including a plurality of adjacent pixel rows is formed in the pixel array unit, and 
 the scan signal voltage supplied to the scan line of the plurality of scan lines when no pixel is selected is supplied so as to vary in accordance with a group of the plurality of groups in which the pixels selected row by row are located.